noun
- one of two identical copies of a chromosome that are joined at the centromere during cell division
Usage: biology
Examples
- Each chromosome consists of two sister chromatids joined at the centromere.
- During mitosis, the chromatids separate and move to opposite poles of the cell.
- Scientists can observe chromatids under a microscope during cell division.
- The chromatids contain identical genetic information.
- Sister chromatids are held together by proteins called cohesins.
- When chromatids separate, each becomes an individual chromosome.